Depending on project's requirement, we want to change from JdbcTemplate into NamedParameterJdbcTemplate in database handling. But I got null point error when I test my coding. I'm sure the error has occurred because of my configuration, but I could not resolve it.
Config
#Value("${spring.datasource.driver-class-name}")
protected String driver;
#Value("${spring.datasource.url}")
protected String url;
#Value("${spring.datasource.username}")
protected String user;
#Value("${spring.datasource.password}")
protected String pass;
#Bean
public DataSource dataSource(){
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName(driver);
dataSource.setUrl(url);
dataSource.setUsername(user);
dataSource.setPassword(pass);
dataSource.setTestOnBorrow(true);
dataSource.setTestOnReturn(true);
dataSource.setTestWhileIdle(true);
return dataSource;
}
#Bean
public JdbcTemplate jdbcTemplate(){
return new JdbcTemplate(dataSource());
}
#Bean
public NamedParameterJdbcTemplate namedParameterJdbcTemplate(){
return new NamedParameterJdbcTemplate(dataSource);
}
DaoImpl
#Repository
public class DAOImpl implements DAO {
#Autowired
private NamedParameterJdbcTemplate jdbcTemplate;
#Override
public List<Type> findAllType() {
String sql = "select * from type";
RowMapper<Type> rm = new TypeRowMapper();
List<Type> list = jdbcTemplate.query(sql, rm);
return list;
}
}
Test
public class Test {
#Autowired
protected DAOImpl dao;
public static void main(String[] args) {
List<Type> list = new ArrayList<Type>();
Test test = new Test();
System.out.println(test.dao);
list = test.dao.findAllType();
for(Type type : list){
System.out.println(type.getName());
}
}
}
Stacktrace
null
Exception in thread "main" java.lang.NullPointerException
at com.example.dao.Test.main(Test.java:18)
Related
Hi I'm trying to write some tests with Mockito and PowerMockito (I need to mock private methods) for a rest service written with SpringMVC and I'm facing the following issue
This is the semplified version of the controller
#Controller
#RequestMapping(value = "/test")
public class SimpleController {
#Autowired
private HttpServletRequest httpRequest;
#RequestMapping(value = "/simpleservice", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
#ResponseBody
public SimpleServiceResponse simpleService(#RequestBody SimpleServiceRequest simpleServiceRequest, HttpServletRequest httpServletRequest) {
SimpleServiceResponse simpleServiceResponse=new SimpleServiceResponse(simpleServiceRequest.getValue());
httpRequest.getHeader("Header");
return simpleServiceResponse;
}
}
and this is the correspoding test class
#WebAppConfiguration
#RunWith(PowerMockRunner.class)
#PowerMockRunnerDelegate(SpringJUnit4ClassRunner.class)
#ContextConfiguration(locations = {"classpath:WebApplicationContext.xml","classpath:SimpleApplicationContext.xml"})
#PrepareForTest(WebController.class)
#TestExecutionListeners({DependencyInjectionTestExecutionListener.class})
public class TestSimpleControllerMockito {
private Logger logger = LoggerFactory.getLogger(TestSimpleControllerMockito.class.getName());
private ObjectMapper objectMapper= new ObjectMapper();
#InjectMocks
private SimpleController controller;
#Test
public void testSimpleService() throws Exception {
MockitoAnnotations.initMocks(this);
SimpleService mockedSimple = mock(SimpleService.class);
when(mockedSimple.doSimpleService(any(SimpleServiceRequest.class))).thenReturn(new SimpleServiceResponse("MockMock"));
SimpleController mockedController=PowerMockito.spy(controller);
SimpleServiceRequest simpleServiceRequest= new SimpleServiceRequest("ciao");
String requestAsStr=objectMapper.writeValueAsString(simpleServiceRequest);
MockMvc mMockMvc=MockMvcBuilders.standaloneSetup(mockedController).build();
MvcResult result= mMockMvc.perform(post("/test/simpleservice").content(requestAsStr).contentType(MediaType.APPLICATION_JSON))
.andExpect(status().isOk())
.andReturn();
String content = result.getResponse().getContentAsString();
SimpleServiceResponse simpleServiceResponse=objectMapper.readValue(content,SimpleServiceResponse.class);
Assert.assertEquals("MockMockMockedSessionManager",simpleServiceResponse.getValue());
}
}
When running the test case I got a NullPointerEception on httpRequest.getHeader("Header");
My guess is that using the #InjectMocks annotation and then using
SimpleController mockedController=PowerMockito.spy(controller);
is the cause of the NullPointerException. I don't know how to preserve the #Autowire annotation processing on the controller Object. I already found a workaround, but it requires to write some redundant code.
Is there a way to make the #autowired annotation work?
Thanks a lot.
P.S.
the SimpleServiceXXX classes are like this one:
public class SimpleServiceResponse {
private String value;
public SimpleServiceResponse() {
}
public SimpleServiceResponse(String value) {
this.value = value;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
}
This is the Application.java class
#Configuration
#SpringBootApplication
//#EnableGlobalMethodSecurity(prePostEnabled=true)
#EnableTransactionManagement
#EnableCaching
#EnableJpaRepositories(basePackages="om.gov.moh.irs.dao.repos",repositoryImplementationPostfix="CustomImpl")
public class Application extends SpringBootServletInitializer {
#Autowired
Environment env;
#Bean
#ConfigurationProperties("spring.datasource")
public ComboPooledDataSource dataSource() {
return new ComboPooledDataSource();
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Application.class);
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
#Bean
public ResourceBundleMessageSource messageSource() {
ResourceBundleMessageSource source = new ResourceBundleMessageSource();
source.setBasenames("messages"); // name of the resource bundle
source.setUseCodeAsDefaultMessage(true);
return source;
}
#Bean
MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
factory.setMaxFileSize(env.getProperty("multipart.maxFileSize"));
factory.setMaxRequestSize(env.getProperty("multipart.maxRequestSize"));
return factory.createMultipartConfig();
}
}
This is the dto class which Im trying to cache.
public class PaginationDto implements Serializable {
private static final long serialVersionUID = 1L;
public Integer totalRecords;
public List<?> paginatedList;
//constructor and getter setter here
}
Controller class
#RequestMapping(value="categories", method=RequestMethod.POST, produces = { "application/json" })
public #ResponseBody ResultDecorator searchCategories(#RequestBody CategoryDto categoryDto) int pageSize, #RequestParam("sort") String sortOrder) throws BusinessException{
return handler.resolveResult(categoryService.searchCategory(categoryDto), OperationEnum.SEARCH);
}
Service class where #cacheable is defined.
#Override
#Cacheable("category")
public PaginationDto searchCategory(CategoryDto categoryDto) throws CategoryException {
System.out.println("#######category");
PaginationDto paginationDtoResponse = null;
paginationDtoResponse = categoryRepoCustom.fetchCategories(categoryDto);
return paginationDtoResponse;
}
Defined ehcache.xml file
<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.ehcache.org/ehcache.xsd"
updateCheck="true" monitoring="autodetect" dynamicConfig="true">
<cache name="category"
maxElementsInMemory="100" eternal="false"
overflowToDisk="false"
timeToLiveSeconds="30000" timeToIdleSeconds="0"
memoryStoreEvictionPolicy="LFU" transactionalMode="off">
</cache>
</ehcache>
On hitting this http://localhost:9190/isa/categories each time console log is printing, which means data is not fetching from the cache.
My Java Class is
public class User {
private List<UserInfo> userInfoList;
public class UserInfo {
private String id;
}
}
Let's assume it has getter, setter method.
json is
{"userInfoList" : [{"id":"a", "id":"b"}]}
I tried to deserialize it like below.
objectMapper.readValue(json, User.class);
But it throws error.
Can not construct instance of User$UserInfoList: no suitable constructor found
How to deserialize it?
I think you should make UserInfo static. Jackson cannot construct the UserInfo class.
I tried with that change and it works for me :
public class User {
private List<UserInfo> userInfoList;
public static class UserInfo {
private String id;
public UserInfo() {
super();
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}
public List<UserInfo> getUserInfoList() {
return userInfoList;
}
public void setUserInfoList(List<UserInfo> userInfoList) {
this.userInfoList = userInfoList;
}
}
And :
public class App {
public static void main(String[] args) throws IOException {
ObjectMapper mapper = new ObjectMapper();
User.UserInfo ui1 = new User.UserInfo();
ui1.setId("a");
User.UserInfo ui2 = new User.UserInfo();
ui2.setId("b");
List<User.UserInfo> userInfoList = new ArrayList<User.UserInfo>();
userInfoList.add(ui1);
userInfoList.add(ui2);
User user = new User();
user.setUserInfoList(userInfoList);
System.out.println(mapper.writeValueAsString(user));
user = mapper.readValue(mapper.writeValueAsString(user), User.class);
}
}
I have a simple resource like:
#Path("/")
public class RootResource {
#Context WebConfig wc;
#PostConstruct
public void init() {
assertNotNull(wc);
}
#GET
public void String method() {
return "Hello\n";
}
}
Which I am trying to use with JerseyTest (2.x, not 1.x) and the GrizzlyTestContainerFactory.
I can't work out what I need to do in terms of config to get the WebConfig object injected.
I solved this issue by creating a subclass of GrizzlyTestContainerFactory and explicitly loading the Jersey servlet. This triggers the injection of the WebConfig object. The code looks like this:
public class ExtendedGrizzlyTestContainerFactory implements TestContainerFactory {
private static class GrizzlyTestContainer implements TestContainer {
private final URI uri;
private final ApplicationHandler appHandler;
private HttpServer server;
private static final Logger LOGGER = Logger.getLogger(GrizzlyTestContainer.class.getName());
private GrizzlyTestContainer(URI uri, ApplicationHandler appHandler) {
this.appHandler = appHandler;
this.uri = uri;
}
#Override
public ClientConfig getClientConfig() {
return null;
}
#Override
public URI getBaseUri() {
return uri;
}
#Override
public void start() {
if (LOGGER.isLoggable(Level.INFO)) {
LOGGER.log(Level.INFO, "Starting GrizzlyTestContainer...");
}
try {
this.server = GrizzlyHttpServerFactory.createHttpServer(uri, appHandler);
// Initialize and register Jersey Servlet
WebappContext context = new WebappContext("WebappContext", "");
ServletRegistration registration = context.addServlet("ServletContainer", ServletContainer.class);
registration.setInitParameter("javax.ws.rs.Application",
appHandler.getConfiguration().getApplication().getClass().getName());
// Add an init parameter - this could be loaded from a parameter in the constructor
registration.setInitParameter("myparam", "myvalue");
registration.addMapping("/*");
context.deploy(server);
} catch (ProcessingException e) {
throw new TestContainerException(e);
}
}
#Override
public void stop() {
if (LOGGER.isLoggable(Level.INFO)) {
LOGGER.log(Level.INFO, "Stopping GrizzlyTestContainer...");
}
this.server.stop();
}
}
#Override
public TestContainer create(URI baseUri, ApplicationHandler application) throws IllegalArgumentException {
return new GrizzlyTestContainer(baseUri, application);
}
Notice that the Jersey Servlet configuration is being loaded from the ApplicationHandler that is passed in as a parameter using the inner Application object's class name (ResourceConfig is a subclass of Application). Therefore, you also need to create a subclass of ResourceConfig for this approach to work. The code for this is very simple:
package com.example;
import org.glassfish.jersey.server.ResourceConfig;
public class MyResourceConfig extends ResourceConfig {
public MyResourceConfig() {
super(MyResource.class);
}
}
This assumes the resource you are testing is MyResource. You also need to override a couple of methods in your test like this:
public class MyResourceTest extends JerseyTest {
public MyResourceTest() throws TestContainerException {
}
#Override
protected Application configure() {
return new MyResourceConfig();
}
#Override
protected TestContainerFactory getTestContainerFactory() throws TestContainerException {
return new ExtendedGrizzlyTestContainerFactory();
}
#Test
public void testCreateSimpleBean() {
final String beanList = target("test").request().get(String.class);
Assert.assertNotNull(beanList);
}
}
Finally, for completeness, here is the code for MyResource:
#Path("test")
public class MyResource {
#Context WebConfig wc;
#PostConstruct
public void init() {
System.out.println("WebConfig: " + wc);
String url = wc.getInitParameter("myparam");
System.out.println("myparam = "+url);
}
#GET
#Produces(MediaType.APPLICATION_JSON)
public Collection<TestBean> createSimpleBean() {
Collection<TestBean> res = new ArrayList<TestBean>();
res.add(new TestBean("a", 1, 1L));
res.add(new TestBean("b", 2, 2L));
return res;
}
#POST
#Produces(MediaType.APPLICATION_JSON)
#Consumes(MediaType.APPLICATION_JSON)
public TestBean roundTrip(TestBean s) {
return s;
}
}
The output of running the test shows that the WebConfig is loaded and the init param is now available:
WebConfig: org.glassfish.jersey.servlet.WebServletConfig#107d0f44
myparam = myvalue
The solution from #ametke worked well but wasn't picking up my ExceptionMapper classes. To solve this I simplified the start() method to:
#Override
public void start() {
try {
initParams.put("jersey.config.server.provider.packages", "my.resources;my.config");
this.server = GrizzlyWebContainerFactory.create(uri, initParams);
} catch (ProcessingException | IOException e) {
throw new TestContainerException(e);
}
}
This was based on Problems running JerseyTest when dealing with HttpServletResponse
I create form and controller this form have some validation constrains using Hibernate validator. I face problem when starting test the validation constrains but I got Blue Exception page with the attributemodel with the rejected.
This the configuration
#Configuration
#ComponentScan(basePackages = {"com.whatever.core.web"})
#EnableWebMvc
public class WebMvcConfig extends WebMvcConfigurationSupport {
private static final String MESSAGE_SOURCE = "/WEB-INF/classes/messages";
private static final String TILES = "/WEB-INF/tiles/tiles.xml";
private static final String VIEWS = "/WEB-INF/views/**/views.xml";
private static final String RESOURCES_HANDLER = "/resources/";
private static final String RESOURCES_LOCATION = RESOURCES_HANDLER + "**";
#Override
public RequestMappingHandlerMapping requestMappingHandlerMapping() {
RequestMappingHandlerMapping requestMappingHandlerMapping = super.requestMappingHandlerMapping();
requestMappingHandlerMapping.setUseSuffixPatternMatch(false);
requestMappingHandlerMapping.setUseTrailingSlashMatch(false);
return requestMappingHandlerMapping;
}
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(new MappingJacksonHttpMessageConverter());
}
#Bean(name = "messageSource")
public MessageSource configureMessageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename(MESSAGE_SOURCE);
messageSource.setCacheSeconds(5);
return messageSource;
}
#Bean
public TilesViewResolver configureTilesViewResolver() {
return new TilesViewResolver();
}
#Bean
public TilesConfigurer configureTilesConfigurer() {
TilesConfigurer configurer = new TilesConfigurer();
configurer.setDefinitions(new String[] {TILES, VIEWS});
return configurer;
}
#Override
public Validator getValidator() {
LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean();
validator.setValidationMessageSource(configureMessageSource());
return validator;
}
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler(RESOURCES_HANDLER).addResourceLocations(RESOURCES_LOCATION);
}
#Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
}
and the controller here
if(result.hasErrors()){
return null; OR "view name"
}
User user = new User();
user.setUsername(userModel.getUsername());
user.setFirstName(userModel.getFirstName());
user.setLastName(userModel.getLastName());
user.setGender(userModel.getGender());
user.setLocation(userModel.getLocation());
user.setPassword(passwordEncoder.encodePassword(userModel.getPassword(),null));
userRepository.save(user);
doAutoLogin(userModel.getUsername(),userModel.getPassword(),request);
return "redirect:/home";
NOTE: I use springMVC, spring security, tiles, and hibernate validator
I used SpringMVC with hibernate validator with XML configuration and portal environment and work fine I don't know what the wrong here!!
I Found the issue! the signature of the method controller should be like this
public String signup(#ModelAttribute("userModel") #Valid SignupForm userModel,BindingResult result,HttpServletRequest request,HttpServletResponse response,ModelMap model)
as what I read in sprinsource forum, the BindingResult should follow the modelAttribute and work find. I didn't find any official documentation for this but its work now.
to see the thread of springsource forum check this link http://forum.springsource.org/showthread.php?85815-BindException-Thrown-on-bind-errors-(instead-of-returning-errors-to-controller-method